using System;
using System.Text;
class MainClass {
public static string ReverseString(string str)
{
if (str == null || str.Length <= 1)
{
return str;
}
StringBuilder revStr = new StringBuilder(str.Length);
for (int count = str.Length - 1; count > -1; count--)
{
revStr.Append(str[count]);
}
return revStr.ToString();
}
public static void Main() {
Console.WriteLine(ReverseString("The quick brown fox jumped over the lazy dog."));
}
}